What was once an insignificant auto show on the edge of the automotive world is rapidly becoming a place where the industry’s leading players are pulling out all the stops.

So, no surprise to see General Motors’ high-line brand take what will soon become its flagship sedan to the 2010 Beijing Motor Show, here putting an even more exclusive patina on the new model in the form of the Cadillac XTS Platinum Hybrid Concept.

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The â€œbaseâ€ XTS made its debut a little more than three months ago, at the Detroit Auto Show.Â The rear-drive sedan is, for the moment, still described as just a concept vehicle, but it is, in reality, due to hit market in 2012 as the replacement for both the old STS and DTS models that had served as Cadillac’s biggest and most expensive sedans.